negative stiffness 中文意思是什麼
negative stiffness
解釋
負剛度-
4. because there are sub - elements in a member with the introduction of inner joints, when tile spatial stifmess matrix of main joints of a member is made, there are some cases of solving the double nonlinear equations, negative stifmesses, and singular stiffness matrices in process of iterating
4 、由於引入了內結點，構件存在子單元，在形成主節點的構件空間單元剛度矩陣時，存在雙重非線性方程求解，迭代過程中負剛度和剛度矩陣奇異問題。 -
For the cantilever beam, the theoretical stiffness and limited capacity are slightly less than the test ones if considering only the steel beam and the reinforced bars in the negative moment zone with the concrete in the tension zone ignored
結果表明：簡支組合扁梁，忽略彈性中和軸以下受拉的混凝土的影響，採用等效換算截面方法計算所得的剛度和極限承載力與試驗結果比較吻合；懸臂梁只考慮混凝土板中配置的負彎矩鋼筋，忽略混凝土，計算所得的剛度和極限承載力比試驗結果略微偏小，但相差不大。 -
At the same time, plastic hinge, rigid zone, negative stiffness, load relaxing and so on are taken into account
該方法一併考慮了塑性鉸、節點剛域、負剛度及單元卸荷等問題。 -
( 3 ) in order to solve the negative stiffness problem in structural numerical analysis, the multi - spring method is set forth and its general iterative equations are deduced. several loading
（ 3 ）為解決結構的負剛度問題提出了多維虛設彈簧法的概念，並對多維虛設彈簧法求解的一般迭代格式進行推導。 -
Test results show that : ( 1 ) the amount of creep deformation during monotonic primary loading depends on strain rate before creep, creep stress level, and creep time ; ( 2 ) during monotonic primary loading, the stiffness increasing magnificently shortly after creep ; ( 3 ) the direction of creep will change from positive creep ; to neutral creep and negative creep during unloading, while during reloading, it will change from negative, to neutral and positive creep
試驗結果表明： （ 1 ）在初始加載過程中，經過一定時間蠕變后黏土的強度有很大的提高； （ 2 ）在卸載過程中，隨應力值下降黏土的蠕變表現出由正蠕變、中性蠕變到負蠕變的逐漸轉化； （ 3 ）在重復加載過程中，隨應力值增加黏土的蠕變表現出由負蠕變、中性蠕變到正蠕變的逐漸轉化。 -
In the numerical simulation of hypersonic chemical nonequilibrium flows, species density may become negative at the beginning of calculation, chemical stiffness is the main reason that affects the calculation ' s stability and convergence
摘要高超聲速三維化學非平衡繞流流場的數值模擬中，在計算初期容易發生組元密度出現負值的非物理現象，另外源項的剛性是影響計算穩定性和收斂速度的主要原因。 -
In this dissertation, the global negative structural stiffness is concerned, and a comparatively complex constitutive model, the microplane theory, is introduced in the numerical study
在論文的第三部分，筆者用編制的程序對6片預應力高強混凝土變截面箱型連續梁的結構行為進行了數值模擬。 -
In previous researches, the attentions were mostly paid to the local negative stiffness caused by concrete crack, and in this case the global stiffness matrix was rarely negative
筆者在已有的研究成果基礎上，對由混凝土結構鱉體剛度矩陣變負引起的求解困難提出了相應的解決方案。
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